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Kinetics of deintercalation of potassium acetate from kaolinite — a Raman spectroscopic study

  • R. L. Frost (a1), J. Kristof (a2) and T. H. Tran (a1)


The kinetics of structural change of a highly ordered kaolinite intercalated with potassium acetate have been studied through both intercalation and deintercalation. Deintercalation of the intercalated kaolinite, brought about by washing for different time intervals was followed by both X-ray diffraction and Raman microscopy. X-ray diffraction shows the kaolinite to be highly ordered with a Hinekley index of 1.42 and intercalated to ~90%. X-ray diffraction also showed that the intercalated kaolinite was deintercalated by 80% in the first minute of washing. An additional Raman band, attributed to the inner surface hydroxyl groups, strongly hydrogen bound to the acetate, is observed at 3605 cm-1 for the potassium acetate intercalate with the concomitant loss of intensity in the bands at 3652, 3670, 3684 and 3693 cm-1. Upon deintercalation, the intensity of the 3605 cm-1 band decreased as the 3695 cm-1 band increased. The Raman spectral changes brought about upon deintercalation mirrored the changes observed by X-ray diffraction. Deintercalation of kaolinite caused disordering of the kaolinite.



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Barrios, J., Plancon, A., Cruz, M.I. & Tchoubar, C. (1977) Qualitative and quantitative study of the stacking faults in hydrazine treated kaolinite. Relationship with the infrared spectra. Clays Clay Miner. 25, 422429.
Brindley, G.W. & Brown, G. (editors) (1984) Crystal Structures of Clay Minerals and their X-ray Identification. Mineralogical Society, London.
Brindley, G.W., Chih-Chun Kao, Harrison, J.L., Lipsiscas, M. & Raythatha, R. (1986) Relation between the structural disorder and other characteristics of kaolinites and dickites. Clays Clay Miner. 34, 233249.
Costanzo, P.M., Giese, R.F. & Lipsicas, M. (1984) Static and dynamic structure of water in hydrated kaolinite. I. The static structure. Clays Clay Miner. 32, 419428.
Farmer, V.C. (1974) The layer silicates. Pp 331-363 in: Infrared Spectra of Minerals. (Farmer, V.C., editor) Mineralogical Society, London.
Frost, R.L. (1995) Fourier Transform Raman spectroscopy of kaolinite, dickite and halloysite. Clays Clay Miner. 43, 191195.
Frost, R.L. (1997) The structure of kaolinite–an FT Raman study. Clay Miner. 32, 7385.
Frost, R.L. & van der Gaast SJ. (1997) Kaolinite hydroxyls–a Raman microscopy study. Clay Miner. 32, 293306.
Frost, R.L., Fredericks, P.M. & Bartlett, J.R. (1993) FT Raman spectroscopy of the kandite clay minerals. Speetrochim. Acta, 20, 667674.
Hess, C.A. & Saunders, V.R. (1992) Periodic ab initio Hartree-Fock calculations of the low symmetry mineral kaolinite. J. Phys. Chem. 96, 43674374.
Johnston, C.T. & Stone, D.A. (1990) Influence of hydrazine on the vibrational modes of kaolinite. Clays Clay Miner. 38, 121128.
Johnston, C.T., Sposito, G. & Birge, R.R. (1985). Raman spectroscopic study of kaolinite in aqueous suspension. Clays Clay Miner. 33, 483489.
Johnston, C.T., Agnew, S.F. & Bish, D.L., (1990) Polarised single-crystal Fourier Transform Infrared Microscopy of Ouray dickite and Keokuk kaolinite. Clays Clay Miner. 38, 573583.
Lagaly, G. (1984) Clay organic reactions. Phil Trans. R. Soc. Lond. A311, 315332.
Ledoux, R.L. & White, J.L. (1966) Infrared studies of hydrogen bonding interaction between kaolinite surfaces and intercalated potassium acetate, hydrazinc, formamide and urea. J. Coll. Inter[: Sci. 21, 127152.
Ledoux, R.L. & White, J.L. (1967) Infrared study of intercalation complexes of kaolinite. Silicates Ind. 32, 26973.
Michaelian, K.H. (1986) The Raman spectrum of kaolinite #9 at 21°. Can. J. Chem. 64, 285289.
Raupach, M., BarTon, P.F. & Thompson, J.G. (1987) Nuclear magnetic resonance, infrared, and x-ray powder diffraction study of dimethylsulfoxide and dimethylselenoxide intercalates with kaolinite. Clays Clay Miner. 35, 20819.
Thompson, J.G. & Cuff, C. (1985) Crystal structure of kaolinite: dimethyl sulfoxide intercalate. Clays Clay Miner. 33, 490500.
Weiss, A., Thielepape, W., Ritter, W., Schafer, H. & Goring, G. (1963) Zur Kenntnis von hydrazin-Wiewior kaolinit. Anorg. Allg. Chem. 320, 183204.
Weiss, A., Thielepape, W. & Orth, H. (1966) Intercalation into kaolinite minerals. Proc. Int. Clay Conf. Jerusalem I, 277-293.
Wiewiora, A., Wieckowski, T. & Sokolowska, A. (1979) The Raman spectra of kaolinite subgroup minerals and of pyrophyllite. Arch. MineraL, 135, 514.

Kinetics of deintercalation of potassium acetate from kaolinite — a Raman spectroscopic study

  • R. L. Frost (a1), J. Kristof (a2) and T. H. Tran (a1)


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